Edward weston



(No Model.)

B. WESTON,

DYNAMO ELEGTRIG MACHINE.

No. 272,366. Patented Peb.13,1883

- .Z/wezzzfor:

I M I UNITED STATES PATENT OFFICE EDWARD .WESTON, OF NEIVARK, NEW JERSEY, ASSIGNOR TO THE UNITED STATES ELECTRIC LIGHTING COMPANY, OF NEW YORK, N. Y.

DYNAMO-ELECTRIC MACHINE.

SPEGIFIOATIGN forming part of Letters Patent No. 272,366, dated February 13, 1883.

Application filed October 2, 1882.

To all whom it may concern Be it known that I, EDWARD VESTON, a subject of the Queen of Great Britain, and a resident of Newark, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Dyna mo-Electric Machines, of which the following is a specification, reference being had to the drawings accompanying and forming a part of the same.

My invention relates to dynamo-electric ma chines, particularly such as contain armatures wound with conductors of large size; and it consists mainly in a method of forming the joints between the several sections of the conductor on the armature.

In the accompanying drawings, Figure 1 represents in longitudinal cross-section an armature embodying my present invention and otherwise constructed in accordance with patents granted to me and applications by me made. Figs. 2 and 3 represent the positions of conductors forming thejoints. Fig. 4 illustrates the method of completing thcjoints.

Similar letters of reference indicate corresponding parts.

The core of the armature is formed by mounting a number of iron plates or disks, A, upon a shaft, B, securin g said plates at short inter- 0 a-ls apart by rings of insulating material, C,

and in place by end pieces, D D, and collars (1. Upon the surface of the cylinder thus constructed, or in grooves cut therein, the conductors are laid. In the present instance these 5 consist of insulated bars E of copper and disks or plates F Gr, the latter being suitably held at the ends of the cylinder, insulated from one another and the shaft, and mechanically connected by cars or similar projections, 0 fg, with the ends of the bars E. The object of my invention is to reduce the resistance of these joints, so that no tendency to heating will be developed thereat. For this purpose I bend the ears or projectionsfg, and apply the plates F'G in such manner that the said cars will be turned away from the center of the core. Thejoints when formed, therefore, will be in such position relatively to the other portions of the armature as to render it pos- (No model.)

sible to electro-deposit metal upon them. This may be readily eifected by immersing the joined ends in a solution of copper or other metal in a small metallic vessel, M, and then connecting the conductors from a battery to to the vessel, and to the plate or liar, or both, 5 so that metal will be deposited around the seam until a perfect metallic joint is formed.

It is of course essential that the surfaces of the ears and bars that are brought into contact, as well as the portions upon which the deposit is to take place, should be perfectly clean and bright, and it will also improve the conductivity of the joint, should the surfaces in contact be gilded, silvered, or otherwise treated in well-known ways.

In primarily uniting the bars with the ears fg, screws or bolts may be used, and it is to be observed that, while the method described of forming these joints by bending the earsf g at right angles renders it possible to elect-roplate upon the joints, the same result may be accomplished by bending the ends of the bars up at right angles, or nearly so, leaving the ears unbent. In either case a further advantage is gained by this form ofjoint which brings a greater amount of surface in contact, so that the area of the juncture will be greater than the sectional area ofthesmaller conductor.

The plan of winding and connection, as well as the character of the armature-coils, may be greatly varied. In the present instance the bars and disks which are used are connected up so that they form acontinuous circuit, and from the junction between one pair of bars and the next a connection is made by a rod, 8 K, with one segment of a commutator, L. It is obviously possible, also, to vary the character of the conductor or conductors that lie across the ends of the cylinder or serve to connect the longitudinal conductors in pairs or series. Without therefore limiting myself to specific details of this kind,

What I claim as my invention is- 1. In the construction of dynamo-electric machines having sectional conductors upon 5 V the ends and sides of the armature, the method herein described of j oinin g said sections, which consists in bending either the end or side section at right angles, mechanically uniting I tallic connection between the bars and the 10 thereto the end of the other section, and then ears, as set forth. coating thejoint so formed with metal. I In testimony whereof I have hereunto set 2. In a dynamo-electric machine, the commy hand this 30th day of September, 1882.

bination of the bars the end connecting pieces T 5 provided with ears in projections bent at right EDWARD WESTON angles and. mechanically joined to the bars, Witnesses: and coatings of metal electro-deposited upon ALEX. P. WRIGHT, the said joints and forming an unbroken me- W. FRISBY. 

